Harmony Test & Dating Scan

Harmony Test & Dating Scan

Baby's Health From 10 Weeks

Our Harmony Test & Dating Scan service is now unavailable, you can book our more affordable replacement NIPT Test →

Harmony Test & Dating Scan

Our Harmony Test & Dating Scan service is now unavailable, you can book our more affordable replacement NIPT Test →

What is the Harmony test? 

The Harmony test is a blood test that measures the baby’s DNA present in the mother’s blood to screen for specific chromosomal abnormalities. 


The Harmony test screens for:


Optional extras:

  • £20 – Gender >99% accurate
  • £25 – Sex chromosome aneuploidy panel (X and Y) Differences in the number of X and Y chromosomes which can result in certain learning and/or behavioural challenges in addition to other health issues. For more information on Klinefelter syndrome which one of the possible sex chromosome aneuploidies please follow this link: Klinefelter syndrome – NHS (www.nhs.uk) or  – Monosomy X only (Turner’s syndrome) please follow link for more information: Turner syndrome – NHS (www.nhs.uk)
  • £84 – Dating ultrasound scan
Book Harmony Test & Dating Scan

Harmony Test & Dating Scan

Our Harmony Test & Dating Scan service is now unavailable, you can book our more affordable replacement NIPT Test →

Why choose the Harmony test over other NIPT brands?

The Harmony test is the most proven brand of non-invasive prenatal test (NIPT) available. It has been used in more than 1 million pregnancies worldwide.  For more information, please follow link to the Harmony website: Harmony | The Most Accurate NIPT Test for Prenatal Screening (roche.com)


Why choose the Harmony test over traditional screening?

The Harmony test screens for the same abnormalities as traditional first trimester screening performed at most NHS trusts, however, the Harmony test is much more accurate.

Correctly indicates high chance for Downs syndrome Incorrectly indicates high chance for Downs syndrome
Harmony NIPT In more than 99% of cases In less than 1 in 1,600 cases
Traditional First trimester screening In 79% of cases In 1 in 20 cases


How does the Harmony test work?

When you are pregnant, your blood contains tiny amounts of your baby’s DNA. The Harmony test looks at this DNA to provide accurate information about the likelihood for the most common chromosome conditions such as Down’s syndrome, Edward’s syndrome and Patau’s syndrome.


How is the Harmony test performed?

Our clinically trained phlebotomist will take a blood sample from your arm.

This sample is then sent to TDL Genetics for processing. TDL Genetics is part of THE DOCTORS LABORATORY in London. Please follow this link for more information: Harmony® Non-Invasive Prenatal Test (NIPT) for patients | The Doctors Laboratory (tdlpathology.com)

We will email the results to you within 7-10 days. Please note results may take longer due to public holidays, strikes etc.


When can I have the Harmony test?

The Harmony test can be done from as early as 10 weeks. Please note that your dates must be confirmed by a dating scan.


Does the Harmony test include an ultrasound scan?

No, an ultrasound scan is not included. Please be aware that you must have a dating scan to have the harmony test to ensure that your dates are accurate. You can either add a dating scan on to your appointment when you book or if you have already had a dating scan you do not have to have one with your harmony test but you must bring your dating scan report with you or we will not be able to do your harmony test.


Will I always get a result?

3 out of every 100 women will require a repeat test. Of those who require repeat tests approximately 2 out of 3 will receive a result. We will issue a refund if the lab is unable to generate a result.


Does a low chance result mean the baby does not have any of the abnormalities that the test screens for?

No, it means they have a lower chance of having an abnormality, however as with any screening there is a possibility of a false negative. The chance of getting a false negative with the harmony test is much lower than with conventional screening.


If I have a high chance result does that mean that the baby has an abnormality?

No, not necessarily. It means there is a higher chance of having an abnormality and you will be referred to your local NHS for further testing and counselling.


What if I have twins?

The Harmony Non invasive Prenatal Test and technology can also be applied to twin pregnancies but is not suitable in the case of a vanishing twin.


The Harmony test is not a suitable option in the following situations: 

  • In pregnancies with more than 2 babies
  • In pregnancies with a demised or vanishing twin
  • In woman under the age of 18
  • In pregnancies with maternal aneuploidy
  • In pregnancies with maternal transplant
  • In pregnancies with maternal malignancy
  • In cases of mosaicism, partial chromosomal aneuploidy or translocations
Harmony Test & Dating Scan at Babyvue Orpington

Happy Baby Bumps

Babyvue is here to make sure you and baby are happy and healthy. To make sure you feel welcomed, reassured, and in safe hands throughout your pregnancy and fertility journey. Here’s what our customers have said about their experience at our Orpington baby scan clinic on Google Reviews.

Based on 460+ reviews
  • Baby Scan

    We had such a great experience at BabyVue in Orpington. As others have mentioned, Elena is lovely and really went above and beyond to make sure we got some great... Charlotte, Verified Review

    Early Pregnancy Scan

    Fantastic early scan, I was nervous even though it’s our second pregnancy and there was no messing about! Within about 20 seconds of having the ultrasound on... JKW, Verified Review
  • Ultrasound Scan

    The staff were all amazing, very helpful and reassuring. It was lovely to see our little baby moving around and the lady that did our scan was great in... Sam, Verified Review

    Gender Reveal

    We came back to BabyVue today for a second visit, first was at 11 weeks and this time for an early gender reveal. Another great experience. Very ... Lisa, Verified Review
  • 4D Baby Scan

    The most amazing experience, very calm and relaxing. We had the 4D scan and Janene was so patient when the baby was hiding away and finally got the most ... Vicky, Verified Review

    Gender Scan

    Brilliant experience. Very welcoming, kind, friendly receptionist. Extremely talented sonographer. Exceptional level of knowledge and experience... Roberta, Verified Review
  • Early Baby Scan

    Excellent experience both times I have visited BabyVue. My first impression of the clinic was the friendly and professional approach of the staff who greeted me ... Kathryn, Verified Review

    Private Ultrasound Scan

    I had a great experience at BabyVue. The staff were professional and friendly. The scans were very clear and the price was very reasonable. I would definitely... Danielle, Verified Review